Cyanide is a highly toxic substance for humans and most animals.
It is believed that minute quantities can benefit humans, but when this is used in mining, there is not minute quantities in circulation.
When it is used in mining, one need protective equipment or face an agonizing death.
It's not harmful at all.
they arn't
The chemicals in the rocks can mess you up
i dont kow
it is harmful...affects human health!
A material that can be harmful if not properly disposed of is hazardous.
Food is essential to human life and health. All humans should have access to a variety of foodstuffs that contain the vitamins and minerals essential for human health. But too much food is harmful to humans and every effort should be made to avoid the possibility of food impacting negatively on human health.
Extremophiles are a danger to human health. Extremophiles can be a danger to plants.
See "How does ozone affect human health?" in the "Related questions" section below.
Some bacteria are beneficial to humans, and some bacteria are harmful to humans.
hazardous wastes
hazardous wastes